Hi AJAYBEER,
I completely agree with Alistu about inability to open file created in a newer version that you might have at this moment. In a meanwhile, if I am not mistaken, I have a version of Optisystem 7 in one of my machines. Therefore, I can try to open the file that you need in a newer version. After that, I can insert the content in a version of Optisystem 7 and upload it for you to try open it…